快速净化和金纳米颗粒的尺寸分离通过透过
Scott F Sweeney1, Gerd H Woehrle, James E Hutchison
1Department of Chemistry and Materials Science Institute, University of Oregon, Eugene, Oregon 97403, USA.
Journal of the American Chemical Society
|March 9, 2006
概括
透镜有效地净化和分离金纳米颗粒根据大小,为传统方法提供更快,更绿色的替代方案. 这种技术产生高度纯净的纳米粒子样本,并允许精确的尺寸分化,这对于先进的材料应用至关重要.
科学领域:
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
- 分离科学 分离科学
背景情况:
- 净化和基于尺寸的纳米颗粒分离对于材料制备至关重要,但具有挑战性.
- 透,染色学和超离心等现有方法可能耗时且效率较低.
- 水溶性纳米粒子需要专门的技术来进行有效的净化和分化.
研究的目的:
- 评估透过对于净化水溶性黄金纳米颗粒的适用性.
- 为了评估透过的能力在分离纳米颗粒混合物基于大小.
- 为了比较透过的纯度和分离效率与传统方法.
主要方法:
- 净化3纳米醇稳定黄金纳米颗粒使用透过.
- 双模和多分散金纳米粒子样本的尺寸分离.
- 使用核磁共振 (NMR),热重力测量分析 (TGA),X射线光电子光谱学 (XPS),紫外线可见光谱学和传输电子显微镜 (TEM) 的表征.
主要成果:
- 与透析,溶剂洗,染色学和超离心法相比,透析实现了金纳米颗粒的更高纯度.
- 紫外线可见光谱和TEM证实了透过的能力,以分离不同核心大小的纳米粒子.
- 成功地将双模和多分散纳米粒子样本分成不同的大小组.
结论:
- 透过是一种快速,绿色和有效的方法,用于制备高纯度黄金纳米粒子样本.
- 该技术使异质纳米粒子混合物的高效尺寸分离成为可能.
- 专用透过膜的开发可以进一步提高高分辨率的纳米粒子尺寸分离.
相关概念视频
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